May. 15, 2019
Polyurethane Prepolymer For Shoe Sole has many advantages: low density, soft texture, comfortable and light to wear; good dimensional stability, long storage life; excellent wear resistance, flexural resistance; excellent shock absorption, anti-slip performance; better temperature resistance Good chemical resistance and so on. Polyurethane is mostly used in the manufacture of high-grade leather shoes, sports shoes, travel shoes and so on.
It is divided into wet and dry methods. It is a polymer solution system with transparent or slightly turbid appearance. The solid content is about (30-35)%, which means that (65-70)% is solvent. Simply say that 1 ton of slurry contains (650-700) kilograms of solvent. For dry processes, it contains so much toluene and methyl ethyl ketone. The amount of toluene is larger because of the better solubility of toluene. In other words, it contains 650-700 kg of pure DMF. Therefore, for the slurry, the price changes of toluene and DMF greatly affect the cost of the slurry, which is very simple.
Polyurethane And Isocyanate For Shoe Sole slurry is used as a coating to prepare polyurethane synthetic leather and artificial leather. Polyurethane synthetic leather has soft and natural luster, soft handfeel and strong leathery appearance. It has excellent mechanical properties such as excellent adhesion to substrates, abrasion resistance, flexing resistance, anti-aging, and anti-fungal properties. It has the advantages of good cold resistance, breathability, washing, convenient processing and excellent price. It is the most ideal substitute for natural leather. It is widely used in clothing, shoes, luggage, furniture, sports and other industries. It is an alternative to the field of dermis application, and it can also be applied to areas where the dermis is not applicable. The dermis market is very susceptible to animals (bovine, sheep, pigs, etc., mad cow disease).
Dry Polyurethane Slurry - In the process of application, the solvent in the slurry is evaporated by heating and evaporation. The solvent is mostly made of toluene and methyl ethyl ketone. The solvent evaporated cannot be recycled, which not only pollutes the environment, but also causes no The necessary waste.
Wet polyurethane slurry - because the process is to extract DMF with water (because DMF and water have unlimited solubility), it is more environmentally friendly, and the synthetic leather produced has good moisture permeability and breathability. Soft, full, light, and more natural leather style and appearance, so the development speed is amazing.